Conceptual Physical Science Explorations
2nd Edition
ISBN: 9780321567918
Author: Paul G. Hewitt, Leslie A. Hewitt, John A Suchocki
Publisher: Addison Wesley
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Question
Chapter 33, Problem 11RQ
To determine
The cause of expansion of star outwards.
Expert Solution & Answer
Answer to Problem 11RQ
When the helium fusion is intensified due to gravity, the outer layer of the star expands outwards.
Explanation of Solution
The temperature rises as the burned-out hydrogen core contracts because of gravity. At, a certain point, the temperature becomes high in the core to launch the fusion of helium to carbon, which is also called helium burning.
Helium fuses to carbon at the star’s centre while hydrogen fuses to helium in surrounding shell. The energy is the output source, which makes the star grow larger.
With the intensified helium fusion within a star, the outward force of thermal pressure causes the expansion of the star outwards.
Conclusion:
Therefore, when the helium fusion is intensified due to gravity, the outer layer of the star expands outwards.
Chapter 33 Solutions
Conceptual Physical Science Explorations
Ch. 33 - What are constellations?Ch. 33 - Why does an observer at a given location see one...Ch. 33 - Prob. 3RQCh. 33 - Is the light-year a measurement of time or...Ch. 33 - Prob. 5RQCh. 33 - Prob. 6RQCh. 33 - What is a H-R diagram?Ch. 33 - Prob. 8RQCh. 33 - Prob. 9RQCh. 33 - Prob. 10RQ
Ch. 33 - Prob. 11RQCh. 33 - What causes a star to contract inwards?Ch. 33 - Prob. 13RQCh. 33 - Prob. 14RQCh. 33 - Prob. 15RQCh. 33 - Prob. 16RQCh. 33 - Prob. 17RQCh. 33 - Why do we not think the Sun will eventually became...Ch. 33 - How does the mass of a star before its collapse...Ch. 33 - If black holes are invisible, what is the evidence...Ch. 33 - Prob. 1TCCh. 33 - Prob. 2TCCh. 33 - Prob. 3TCCh. 33 - Prob. 4TCCh. 33 - Prob. 5TCCh. 33 - Prob. 1TECh. 33 - On the Moon, stars other than the Sun can be seen...Ch. 33 - We see the constellations as distinct groups of...Ch. 33 - Prob. 4TECh. 33 - If you were to travel to the north pole, where in...Ch. 33 - What is relationship between white drawf and nova?Ch. 33 - What event marks the birth of a star?Ch. 33 - Prob. 8TECh. 33 - Prob. 9TECh. 33 - Prob. 10TECh. 33 - Prob. 11TECh. 33 - Prob. 12TECh. 33 - Prob. 13TECh. 33 - Prob. 14TECh. 33 - Prob. 15TECh. 33 - Prob. 16TECh. 33 - Prob. 17TECh. 33 - Prob. 18TECh. 33 - Prob. 19TECh. 33 - Prob. 20TECh. 33 - Summer and winter constellations are different...Ch. 33 - Prob. 2RATCh. 33 - The star nearest Earth is (a) Alpha Centauri. (b)...Ch. 33 - Prob. 4RATCh. 33 - Prob. 5RATCh. 33 - Prob. 6RATCh. 33 - Prob. 7RATCh. 33 - Prob. 8RATCh. 33 - Prob. 9RATCh. 33 - A black hole is (a) an empty region of space with...
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